is it possible to run 15s?
Yes. That is a very dumb question. You should just buy a set of 15's and see if they fit. Duh. :banana:
Not dumb at all. It's a bit confusing. Comes down to what kind of 4Runner you have and what options it has. The easiest way to tell is that if it came with 16" wheels from the factory, it has the bigger front brakes and can't fit anything smaller than 16". Even some 16" won't work. If it has 15" from factory, then obviously you can fit 15" wheels.
16" limits tire size options
heres my question..... why would u want 15s?
heres my question..... why would u want 15s?